The MC10H166 is a 5–Bit Magnitude Comparator and is a functional/pinout duplication of the standard MECL 10K part with 100% improvement in propagation delay and no increase in power–supply current.
The MC10H166 is a high–speed expandable 5–bit comparator for comparing the magnitude of two binary words. Two outputs are provided: A<B and A>B. The A = B function can be obtained by wire–ORing these outputs (a low level indicates A = B) or by wire–NORing the outputs (a high level indicates A = B). A high level on the enable function forces both outputs low.

• Propagation Delay, Data–to–Output, 2.0 ns Typical
• Power Dissipation 440 mW Typical
• Improved Noise Margin 150 mV (Over Operating Voltage and Temperature Range)
• Voltage Compensated
• MECL 10K–Compatible